Default Internet with Null23

I use Null23 with an unrooted Sprint Note 2 to access the internet. I have Bluetooth tethering set on the phone and Bluetooth internet access set on the Gear. I can connect to the internet OK, but only when I am connected to the internet by wifi on the phone. If I set the wifi to off on the phone, the gear will not connect to the internet. Am I missing something? Are the 3G/4G speeds too slow so that the gear doesn't think it is connected?